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本文阐述了探地雷达探测坝体隐患的基本原理,以黄河韩城段下峪口下延控导工程为实例,解析了坝体不密实、脱空、局部塌陷和裂缝等几种典型隐患的雷达图像特征,探明了坝体内部隐患的主要分布范围和影响深度,经开挖验证,结果可靠,并结合历史背景资料,分析了造成坝体局部渗漏的原因,为探地雷达技术在水利工程隐患探测中的应用提供了借鉴。
This paper describes the basic principles of GPR detection of hidden dangers in dam body. Taking the control project of Xiaokou downstream depression in Hancheng section of the Yellow River as an example, this paper analyzes some typical hidden faults such as under-dense dam, emptying, partial collapse and cracks Radar image characteristics of the dam body to identify the main distribution of the hidden dangers and depth of influence of the excavation verified with reliable results, combined with historical background data to analyze the causes of local dam leakage for ground penetrating radar technology in Water conservancy project detection in the application of hidden dangers provided a reference.